If $p (x) = 2 + 5 x$ then $p (2) - p (- 2) - p (1)$

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Solution

Given:
$p (x) = 2 + 5 x$

Therefore,
$p (2) + p (- 2) - p (1) = (2 + 5 \times 2) - (2 + 5 \times (- 2)) - (2 + 5 \times 1)$
$= 12 + 8 - 7$
$= 13$

Hence, this is the required result.

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